Weight



{No Model.)

W W WAINWRIGHT PAGKING'BOX FOB ROTARY Mowmzsp No. 525.776. PatentedSept. 11', 1894.

itnesses 3 WWmM nt .dI"

M M a W Attorney UNITED STATES PATENT OFFICE.-

WILLIAM W. WAINWRIGHT, OF CONNERSVILLE, INDIANA, ASSIGNOR TO P. H. & F.M. ROOTS 00., OF SAME PLACE.

PACKING-BOX FOR ROTARY BLOWERS.

SPECIFICATION forming part of Letters Patent No. 525,? '76, datedSeptember 11, 1894.

Application filed April 30, 1894. Serial No. 509,449. (No model.)

To all whom it may concern.- I

Be it known that I, WILLIAM W. WAIN- wRIGHT, of Connersville, Fayettecounty, Indiana, have invented certain new and useful Improvements inPacking-Boxes for Rotary Elowers, of which the following is a specifica-10H. In rotary blowers the shafts of the rotary lmpellers project outthrough the heads of the casings and their projecting portions are.provided with suitable bearings and driving gears. When such blowersare used for certain purposes it is important that there should be noleakage where the shaft procctsout of the casing, and it is with thepacking glands used at these points that my present invention has to do.

My improvements will be readily understood from the followingdescription taken in connection with the accompanying drawings, 111which-- Figure 1, is a side elevation, part vertical section, of thecasing-head, bearing and stuffing box of a rotary blower, theconstruction showlng my present invention; Fig. 2, a side elevation ofone of the packing screws, part vertical section; and Fig. 3, a faceview of the parts shown in Fig. 1, viewed from the left-hand of Fig. 1,parts being in vertical section.

In the drawings2-A, indicates the usual casing-head of a rotary blower;B, one of the bearings connected therewith, the bearing in this instancebeing shown as provided with an adjustable box; 0, the shaft; D, thestuffing-box or packing cavity around the shaft; where the shaft passesoutward through the casing head, this stufling-box opening outwardlytoward the j ournal-bearing; E, a space or recess between thestufling-box and the inner end of the journal-box to permit of thepresence of the gland and to permit the insertion of the packing; F, thepacking-gland fitting the shaft and the stuffing-box and splitdiametrically so as to be in two pieces,

the length of the gland being substantiallyequal to the width of thespace E; G, the lugs upon the packing-gland for the packingscrews, theselugs being so disposed that the out which separates a gland into twohalf pieces passes through these lugs and cenupon the journal-box inline with the holes in the lugs of the gland, the lugs H being tappedfor the packing-screws; J, the packing-screws, threaded into the lugs Hand presenting their heads against the lugs G of the gland; K, annularbosses projecting from the face of the lugs G, around the holes therein,these bosses seating in recesses in the faces of the heads of thepacking-screws J; and L, portions of the screws J projecting inwardlybeyond the heads thereof and through the holes in the lugs of theglands.

By turning up the screws J the glandwill be forced in compressively uponthe packing. By turning back the screws J the gland F may be withdrawn,and by turning the screws back till the recesses in their heads are freefrom the bosses K the gland may be entirely removed, it then being intwo disunited halves, the recesses in the heads of the screws engagingthe bosses K holding the two halves together when the gland is in place.The gland may thus be readily removed to permit access'to thestuffing-box to insert the packing. In rotary blowers it is of highimpdrtance that the journal-bearing be kept up as close as practicableto the casing-head and this requirement interferes with thepracticability of finding room to withdraw the gland a proper distancefrom the stufiing-box to permit the proper insertion of packing. Thepresent arrangement permits the journal-box to be carried up very closeto the stuflingbox. The projecting portion L of the packing screws, andthe holes in the lugs G for those projecting portions, are notabsolutely necessary as the recesses engaging the bosses will unite thetwo halves of the gland and properly apply the pressure to the gland,but the projecting portion L will be found a contrally through the holesin the lugs; H, lugs venience in steering the parts to proper position.So far as merely forcing the gland into the stufiing-box is concerned,the studs ordinarily employed with nuts upon them would of course be theequivalent of the through lugs rigidly supported in front of the gland,is of special advantage in permitting freedom of access to thestufiing-box when the gland is out and away, as the screws do not thencross the recess E to interfere with access to the stulfing-box.

I claim as my invention- 1. The combination, substantially as set forth,of a stuffing-box, a gland therefor provided with lugs having facialbosses and split dlametrically through the bore of the gland and throughsaid bosses, and screws arranged to force the gland into thestuffing-box and having recesses engaging around said bosses and holdingthe two halves of the gland together.

2. The combination, substantially as set forth, of a stnfiing-box, apacking-gland therefor provided with lugs G, having facial bosses andsplit diametrically through the bore of the gland and through saidbosses, threaded lugs as H rigidly supported in front of the gland andin line with said bosses, and screws threaded through said threaded lugsand having heads with recesses surrounding said bosses and holding thetwo halves of the gland together;

3. The combination, substantially as set forth, of a casing-head for arotary-blower, a

stufiing-box formed therein, a shaft through 30 with facial bosses andsplit diametrically 35 through the bore of the gland and through saidbosses, and screws arranged to force the gland into the stuffing-box andprovided with recesses surrounding said bosses and holding the twohalves of the gland together.

4. The combination, substantially as set ,forth, of a casing-head for arotary-blower, a

stuffing-box formed therein, a shaft through said stuffing-box, ajournal-bearing for said shaft disposed in front of and a distance awayfrom the open end of said stuffing-box, a packingland in saidstufling-box provided with facial bosses and split diametrically throughthe bore of the gland and through said bosses, and screws engaging saidjournal-box and provided upon their inner ends with recessed headssurrounding said bosses and holding the two halves of the glandtogether. a,

WILLIAM W. WAINWRIGHT. Witnesses:

GEO. H. FULLERTON, J a, LOU R. CoNNER.

